JP2011059688A - Disk-shaped optical lens array and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk-shaped optical lens array and a manufacturing method thereof. <P>SOLUTION: The disk-shaped optical lens array and the manufacturing method thereof use plastic injection-compression molding. The disk-shaped optical lens array is formed by injection molding of plastic material at a center of a disk and has a first optical surface and a second optical surface and has a plurality of corresponding optically acting zones (optical divisions) on the first and the second optical surfaces to form a plurality of optical lenses in an array and can be cut into single optical lenses. Furthermore, the disk-shaped optical lens array includes an alignment fixture, and the alignment fixture is used to accurately align optical axes of at least two disk-shaped optical lens arrays or the disk-shaped optical lens array and other optical element arrays, and they are stacked and combined to form a stacked disk-shaped optical lens array. Therefore, the manufacturing process of the optical lens array is remarkably simplified, and the precision is improved, and the manufacturing cost is reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical lens array and a manufacturing method thereof, and more particularly to a conversion system disk-shaped optical array used for a combination lens of an LED light source, a combination lens of solar energy, an optical lens of a mobile phone camera, and the manufacturing method thereof.

  The plastic injection compression molding technology has been widely applied to the production of optical products such as DVD, CDROM, optical lenses, etc., which have already taken into account high-precision dimensions and optical properties, such as TW182060 and TWI309601. Plastic injection compression molding combines two types of molding technology, injection molding and compression molding, and mainly adds a mold compression process during the general injection molding process, that is, the mold is completely closed at the beginning of plastic material injection. Otherwise, after a part of the plastic material is injected into the cavity, pressure is used to close the mold, and pressure is applied to the molten plastic material in the cavity from the injection point to close and close the mold. Clamping mold operations), and cavity filling is completed by compression molding. Compared with general injection molding, this molding method can reduce residual stress, reduce the difference in refraction index of the finished product, and form an optical lens with high precision dimensions. Can do. For example, US2008 / 0093756, JP2008-230005, JP2003-071874, etc. already use this molding method to form an optical lens.

  Conventional optical lenses are manufactured mainly by a single optical lens, and in particular, by a plastic injection molding method, a plurality of mold cavities are often installed on a mold, for example, in one mold. It has four or eight cavities, injection molds four or eight optical lenses at a time, cuts through a runner stick and separates into a single optical lens. For example, US Pat. No. 6,270,219 uses an injection molding method to form ten optical lenses 911, uniform each optical lens 911, and a down sprue for supplying raw materials at the center of the cavity as shown in FIG. A down sprue stick 9104 is formed in the central portion of the primary product that is provided and formed, and the runner stick 9103 around the periphery of each optical lens 911 is excised. Separated into optical lenses 911.

  In order to reduce manufacturing costs, JP2006-030722, JP2003-149409, JP2001-194508, TW M343166, etc. present a manufacturing method of an optical lens array, and the formed optical lens array is a lens array of LED light source, solar energy conversion system It can be used for a lens array. Alternatively, the optical lens array is cut and separated to form a single optical lens, which is used in a lens module of a mobile phone camera. Alternatively, first, a lens sub-module array is configured with an optical lens array and other optical members, and further cut into a single lens sub-module, a lens holder (lens holder), an image acquisition member ( An image capture device) or other optical member forms a lens module. For different purposes or processes, the optical lens array has various shapes. For example, JP3182581, JP2003-004909 is an array in which rectangular substrates are arranged in a square shape. Alternatively, an optical lens array is formed by a wafer level process as in US7,183,643, US2007 / 0070511, and WO2008011003. Alternatively, for example, JP2001-042104 suggests adopting recesses of different depths to avoid distortion deformation of the microlens array. Further, for example, JP2000-321526 proposes that a self-focus (SELFOC) array lens uses a height and a crevice to deposit two self-focus lenses.

  For example, JP2007-030339 and JP2004-017555 are used to manufacture an optical lens array using an injection compression molding method. As shown in FIG. 2, the upper and lower molds 9511 and 9512 are formed in cavities. The plastic material 952 is injected, and the plastic material is pressed and compressed by the upper and lower molds 9511 and 9512. After solidification, the upper and lower molds 9511 and 9512 are separated, and the optical lens array 910 is taken out. Since the pressure used by the injection compression molding method is lower than that of general injection molding, the residual stress of the optical lens array 910 can be reduced. However, the down sprue is usually located at the edge of the primary product, and when the plastic material is compressed and pushed into each optical lens, the pressure is lowered as the optical lens is located at a longer distance, and each optical lens is not effective. It becomes difficult to form a highly accurate optical lens by causing defects that become uniform.

  An optical lens array applied to an optical system, each optical lens is always composed of an aspheric optical surface, and the required surface accuracy (SAG accuracy) and optical center axis accuracy (alignment accuracy) are generally used. This avoids the disadvantages of conventional optical lens arrays, such as changes in surface accuracy and distortion caused by residual stress, and differences in distance from the down sprue and edges. Or reduce the cost, simplify the process, reduce cost, provide use for LED light source combination lens, solar energy conversion system combination lens, and mobile phone camera optical lens, mass production yield and production volume It is an urgent issue to meet the demand of the future.

  An object of the present invention is to provide a disk-shaped optical lens array for use in an optical lens of an optical system, which is formed by performing plastic material injection molding at the center of the disk using a plastic injection compression molding method. It has a circular disk shape, the center of which is provided with a disk hole, including the first and second optical surfaces, and a plurality of opposing optical action areas, respectively, corresponding to a plurality of optical lenses. Formed and arranged in an array. Of these, the arrangement of the optical lenses is not limited, and the optical lenses can be arranged at equal intervals, arranged radially, or arranged in a sub-array. The type of the optical lens is not limited, and may be a bi-concave lens, an M-shaped lens, a Fresnel lens, or the like according to different requirements, or the same disc-shaped optical Various different types of optical lenses can be installed on the lens array. The shape of the disk hole is not limited and can be circular, rectangular or polygonal according to different requirements.

  Another object of the present invention is to provide a disk-like optical lens array for use in an optical lens of an optical system, which further comprises at least one localization mechanism, utilizing the localization mechanism, and comprising at least two The disk-shaped optical lens array is precisely aligned with the optical center axis of the optical lens and deposited and combined to form a stacked disk-shaped optical lens array. Alternatively, a disk-shaped optical lens array and other optical element arrays are precisely aligned with the optical center axis of the optical lens, and the deposited disk-shaped optical lens array is stacked. Among them, the structure of the localization mechanism is not limited, and includes a localization pin, an alignment cavity, a collimator lens, a set-point hairline, or a through-hole. ). In addition, a ring fixture is installed at the periphery of each optical lens, which is a protrusion ring, a groove ring, or a combination thereof, and a glue is applied during assembly. Fill or use for localization. Among them, the optical member array includes other disk-shaped optical lens arrays, spacer arrays, aperture arrays, cover glass, infrared filter lenses (IR-cut glass), solar energy. It can be a photoelectric device array, a circuit board (PCB) or the like.

  Another object of the present invention is to provide an optical lens element, which singularizes a disk-shaped optical lens array along a cutting line to produce a single optical lens. It becomes as. Alternatively, it is cut and separated along a cutting line to form a single optical lens sub-array, which includes a plurality of optical lenses, arranged in an array manner and used for the optical lenses of the optical system.

Another object of the present invention is to provide a method of manufacturing a disk-shaped optical lens array, which is a plastic injection compression molding method formed by injection molding a plastic material at the center of the disk, and comprises the following steps: Including:
S0: Each includes an upper and lower mold of the optical surface mold surface, a raw material supply port is provided at the center of one of the upper and lower molds, and a plastic injection compression mold is provided.
S1: The upper and lower molds are slightly opened, the plastic material is replenished from the raw material supply port in the cavity, pressure is applied, and compression filling is performed to complete the filling of the cavity.
S2: After cooling, the upper and lower molds are separated to form a disc-shaped optical lens array primary product,
S3: taking out the primary product including the disk-shaped optical lens array and the down sprue stick;
S4: Cutting the down sprue stick to form a disk-shaped optical lens array, and forming a disk hole in the central part thereof,
Further, the following step S5 is included to form a single optical lens or optical lens sub-array:
S5: A cutting line is set, the disc-shaped optical lens array is cut along the cutting line, and separated into a single optical lens or optical lens sub-array.

  This manufacturing method can form a precise disc-shaped optical lens array at a time, or can form a plurality of precision optical lenses or a plurality of precision optical lens sub-arrays.

It is explanatory drawing of the optical lens formed using the conventional injection compression molding method. It is explanatory drawing of the conventional optical lens array manufacturing method. It is explanatory drawing of the disk-shaped optical lens array (Example 1) of this invention. It is explanatory drawing which cut | disconnected the disk-shaped optical lens array of this invention into the single optical lens. FIG. 6 is an explanatory diagram in which a disc-shaped optical lens array (Example 2) according to the present invention is provided with a localization pin and a localization mechanism in the form of a concave groove. FIG. 6 is an explanatory diagram in which the disc-shaped optical lens array (Example 2) of the present invention is provided with a localization mechanism in the form of a localization pin and a collimator lens. FIG. 6 is an explanatory diagram in which a disc-shaped optical lens array (Example 2) according to the present invention is provided with a localization pin and a localization mechanism in the form of a through hole and a cross-shaped line. It is explanatory drawing in which the disk-shaped optical lens array of this invention forms a deposited disk-shaped optical lens array (Example 2). It is a plastic feed pressure distribution explanatory drawing of the conventional optical lens array. It is distribution explanatory drawing of the plastic feed pressure of the disk-shaped optical lens array of this invention. It is explanatory drawing of the disk-shaped optical lens array (Example 3) of this invention. It is explanatory drawing of the disk-shaped optical lens array (Example 4) of this invention. It is explanatory drawing of the disk-shaped optical lens array (Example 5) of this invention. It is explanatory drawing of the disk-shaped optical lens array (Example 6) of this invention. It is explanatory drawing 1 of the optical lens subarray (Example 6) of this invention. FIG. 6 is an explanatory diagram 2 of an optical lens sub-array (Example 6) of the present invention. It is explanatory drawing of the disk-shaped optical lens array (Example 7) of this invention. It is explanatory drawing of an optical lens subarray (Example 7) provided with the orientation mechanism of this invention. It is explanatory drawing of the disk-shaped optical lens array (Example 7) of this invention. It is explanatory drawing of the injection compression molding mold used for manufacturing the disk-shaped optical lens array of this invention. FIG. 2 is an explanatory diagram of an injection compression mold of Example 1 of the present invention. It is explanatory drawing of the injection compression mold of Example 7 of this invention. It is manufacturing method explanatory drawing of the disk-shaped optical lens array of this invention. It is explanatory drawing of the cutting down sprue of the primary product of this invention.

  With reference to FIGS. 3 and 4, the disc-shaped optical lens array 1 of the present invention is formed by performing plastic material injection molding at the center of the disc using a plastic injection compression molding method. A disk hole 13 is provided in the disk, and the first and second optical surfaces 11 and 12 are provided. A plurality of opposing optical action areas are provided on the disk holes 13, and a plurality of optical lenses 10 are formed correspondingly and arranged in an array. . When cutting and separating along the cutting line 14 to be provided, a single optical lens 10 can be obtained. Alternatively, it can be cut and separated along a specific cutting line 14 to form a single optical lens sub-array 111, as shown in FIGS.

  The disk-shaped optical lens array 1 further includes at least one localization mechanism 15 (16, 17, 18) as shown in FIGS. 5 to 7, and the localization mechanism 15 (16, 17, 18) Utilizing this, at least two disk-shaped optical lens arrays 1 (2) are deposited and formed on the deposited disk-shaped optical lens array 100 by precisely aligning the optical center axis 101 of the optical lens. Alternatively, the disk-shaped optical lens array 1 (2) and the optical member array 3 (optical element array) are deposited and formed on the deposited disk-shaped optical lens array 100 by precisely aligning the optical center axis 101 of the optical lens. As shown in FIG.

Referring to FIG. 23, the manufacturing method of the disk-shaped optical lens array 1 of the present invention includes the following steps:
S0: Providing a plastic injection-compression mold 51 that includes upper and lower molds 511 and 512, respectively, on which an optical surface mold surface is provided, and a raw material supply port at the center of one mold surface of the upper and lower molds 521 is provided;
S1: Use a plastic injection compression molding method to complete the cavity filling;
S2: After cooling, the upper and lower molds 511 and 512 are separated to form the disc-shaped optical lens array primary product 61;
S3: taking out the primary product 61 and having a down sprue stick 614 thereon;
S4: The down sprue stick 614 is cut, as shown in FIG. 24, to form the disc-shaped optical lens array 1, and the disc hole 13 is formed at the center thereof. 13 can be circular, rectangular or polygonal;
S5: Further, a cutting line is set, the disc-shaped optical lens array 1 is cut along the cutting line, and separated into a single optical lens 10 or an optical lens sub-array 111 (112) (FIG. 15). , FIG. 16).

<Example 1>
With reference to FIGS. 3, 4, and 23, the disk-shaped optical lens array 1 of this embodiment includes first and second optical surfaces 11 and 12, and a plurality of, for example, 212 ( (Not limited to this), and 212 optical lenses 10 are formed correspondingly and arranged in an equally spaced array, which is a circular disk shape, has a diameter of 120 mm, and a disk in the center. The disc hole 13 is formed by cutting the down sprue stick 614 in the disc-shaped optical lens array primary product 61, as shown in FIG. 24, and the direct system is 30 mm.

  Further, a cutting line 14 is provided on the disk-shaped optical lens array 1, and the cutting line 14 is usually placed between the two optical lenses 10 at equal intervals in the vertical direction and the horizontal direction (see the drawing). It can be cut along the cutting line 14 into a single optical lens 10, i.e. 212 optical lenses 10 can be formed at once.

Referring to FIG. 23, the plastic injection compression molding equipment used in this embodiment is similar to the DVD optical disk manufacturing equipment. The plastic material used by the disk-shaped optical lens array 1 of this embodiment is optical PC (polycarbonate). The process includes the following steps:
S0: A plastic injection compression mold 51 including upper and lower molds 511 and 512 is provided. As shown in FIG. 21, a plurality of 212 opposing aspherical optical surface concave mold surfaces are provided on the lower mold, respectively. A raw material supply port 521 is provided at the center of 512;
S1: Open the upper and lower molds 511 and 512 slightly, inject a part of plastic material, for example, optical PC, into the cavity from the raw material supply port 521, pressurize the upper and lower molds, close the mold and clamp the mold, and Plastic material is replenished from the raw material supply port 521, compression molding is performed, and cavity filling is completed. The plastic material injection speed of the present embodiment is 155 mm / sec, and the injection speed of general injection molding is 250 to 300 mm / sec. The internal stress generated is relatively low, and during this process, the mold surfaces of the upper and lower molds 511 and 512 are imprinted on the first and second optical surfaces 11 and 12 of the disc-shaped optical lens array 1, respectively. Can do;
S2: After cooling, the upper and lower molds 511 and 512 are separated to form the disc-shaped optical lens array primary product 61;
S3: taking out the primary product 61 and having a down sprue stick 614 thereon;
S4: The down sprue stick 614 is cut to form a disk-shaped optical lens array 1 as shown in FIG. 24, which is provided with a plurality of, for example, 212 biconvex optical lenses 10 to form an evenly spaced array. Arranged and forming a disc hole 13 in its central part, which disc hole 13 can be circular, rectangular or polygonal, according to different requirements, in this example circular;
S5: A plurality of vertical and horizontal cutting lines 14 are created on the disk-shaped optical lens array 1, and each of them is, for example, 21 and further separated into a single optical lens 10 along the cutting lines 14. That is, 212 precise optical lenses 10 are formed at a time.

  When the upper and lower molds 511 and 512 are provided with a plurality of, for example, 212 aspherical optical concave and convex mold surfaces, a disk-shaped optical lens array 1 including 212 new-moon optical lenses 10 is formed. To do. The upper and lower molds 511 and 512 each form a disk-shaped optical lens array 1 including 212 biconcave optical lenses 10 when a plurality of, for example, 212 aspherical optical surface convex and convex mold surfaces are provided. To do. The upper and lower molds 511 and 512 each form a disk-shaped optical lens array 1 including 212 M-type optical lenses 10 when a plurality of, for example, 212 aspherical optical M-type and M-type mold surfaces are provided. To do. The so-called M-type optical lens has an inflection point of refractive power from the center of the lens toward the lens edge, and after passing through the inflection point, the degree of reflection changes positively and negatively.

  Referring to FIG. 9, it is a conventional optical lens array primary product 91, which includes two optical lens arrays 910, each of which includes a plurality of optical lenses 911 and a down spruce. A tick 9104 and a runner stick 9103 are provided. During the injection compression molding process, the plastic material is injected and injected from the middle part of the cavity (forming the down sprue stick 9104), passing through the down sprue (forming the runner stick 9103), and from the center to the cavity side The distance of the optical lens 911 extending from the entire cavity toward the edge and entering the optical lens array 910 to the farthest end is d, and the distances at different positions of the cavity edge are not the same. Furthermore, since the plastic material is injected into the cavity gradually and narrowly through a small down sprue, and the firing speed to be used needs to be relatively high, if the residual stress is relatively large and the position is different, the residual stress Is also different. Therefore, the manufacturing method as shown in FIG. 9 makes it difficult to reduce the residual stress and produce an optical lens array 910 that is relatively undistorted or has a uniform distribution.

  Referring to FIG. 10, it is an explanatory view of the plastic material injection injection of the disc-shaped optical lens array 1 of the present invention. The plastic material is injected and injected into the cavity via the raw material supply port 521 of the lower mold 512 ( Forming the down-sprue stick 614 of the primary product 61), the plastic material is stretched toward the cavity edge in a circumferential manner, and the raw material supply point is the center of the array, from the raw material supply point to the cavity edge Up to the edges, all have the same length d, the pressure received by each optical lens 10 is relatively uniform, and does not form the disadvantage of non-uniform pressure at the edge as shown in FIG. Furthermore, since the plastic material can enter the cavity after injection injection and use a relatively low rate of fire, the residual stress is also relatively small. Thus, an optical lens array with high precision and uniform optical lenses can be obtained.

<Example 2>
Referring to FIG. 5, 244 optical action regions and four localization mechanisms 16 are provided on the first and second optical surfaces 11 and 12 of the disk-shaped optical lens array 1 of the present embodiment, respectively. Each of the optical action regions forms 244 optical lenses 10 correspondingly and is arranged in an equally spaced array, and the four localization mechanisms 16 are provided on the edges of the disk-shaped optical lens array 1, respectively. . In the localization mechanism 16 of the present embodiment, four localization pins 161 (protrusion) are installed at intervals of 90 ° on the first optical surface 11, and four concave grooves 162 (groove) are formed on the second optical surface 12. Install the corresponding.

  The manufacturing method of the disk-shaped optical lens array 1 of this example is the same as that of Example 1, but four concave holes are added to the upper mold 511, and the lower mold 512 is provided with four protrusions correspondingly. The formed disc-shaped optical lens array 1 is provided with an array formed of 244 optical lenses 10 and four sets of localization mechanisms 16.

  With the same manufacturing method, different positioning mechanism forming mold surfaces can be provided on the upper and lower molds 511 and 512, respectively, and the disc-shaped optical lens array 1 having different positioning mechanisms can be formed. As shown in FIG. 6, the upper mold 511 is provided with three spherical concave holes and 244 aspheric optical surfaces, and three spherical concave holes corresponding to the lower mold 512 and 244 aspherical surfaces. If the mold surface of the optical surface is installed, the disk-shaped optical lens array 1 having the array formed by 244 optical lenses 10 and the localization mechanism 15 in the form of three collimator lenses is formed. The localization mechanism 15 in the form of the collimator lens is a biconvex spherical lens, and an optical calibration instrument can be used. The localization mechanism 15 passes through the localization mechanism 15 with a laser beam, and the localization accuracy is high. 5 μm or less can be achieved and can be used for precision assembly.

  For the purpose of precise localization, the upper mold 511 or the lower mold 512 is further provided with a positioning mechanism 18 in the form of a cruciform line, the position of the cruciform line being a reference point (set- The localization mechanism 18 is molded on the disk-shaped optical lens array 1 formed by using this mold, as shown in FIG. During assembly, the localization can be performed by the localization mechanism 18, and the localization accuracy can be 3 to 5 μm or less, and can be used for precision assembly.

  As shown in FIG. 7, the upper mold 511 is provided with three convex points and 244 aspheric optical surfaces, and three convex points corresponding to the lower mold 512 and 244 aspheric optical surfaces. If a molding die surface is installed, a disk-shaped optical system provided with an array formed by 244 optical lenses 10 and three positioning mechanisms 17 (only one positioning mechanism 17 is shown in FIG. 7). The lens array 1 is formed and the localization mechanism 17 is used in subsequent assembly.

  With reference to FIG. 8, a stacked disk-shaped optical lens array 100 includes two disk-shaped optical lens arrays 1 and 2 and an optical element array 3. The disk-shaped optical lens array 1 includes an array formed by four localization mechanisms 16 and 244 M-type optical lenses 10, and the localization mechanism 16 includes four localization pins 161 as shown in FIG. It is composed of four concave grooves 162. The disk-shaped optical lens array 2 includes an array formed by four grooves 262 used for localization and 244 new-moon optical lenses 20. 244 image capture members 30 (image capture devices) are provided on the optical member array 3, four localization pins 361 are provided, and the four localization pins 161 and the four concave grooves 162 of the disk-shaped optical lens array 1 are provided. These are opposed to the four positioning grooves 262 of the disk-shaped optical lens array 2. At the time of assembly, each of the optical lenses 20 and 10 of the disk-shaped optical lens arrays 2 and 1 and each of the image acquisition members 30 of the optical member array 3 is obtained by corresponding combinations of the localization pins 361 and the concave grooves 162 and the localization pins 161 and the concave grooves 262. Are aligned with each other by the optical center axis 101, and an adhesive (not shown) is applied to the non-optical working area between the optical lens arrays, combined and solidified, and then deposited into a disk shape having 244 lens modules. The optical lens array 100 is formed.

<Example 3>
Referring to FIG. 11, the present embodiment is a disk-shaped optical lens array 1 having an annular mechanism, of which an annular mechanism 102 is provided outside each optical lens 10, and the disk-shaped optical lens array 1 is a single optical lens. When cut into 10, the annular mechanism 102 can be used as an adhesive groove or can be used as a stereotaxic mechanism. The disk-shaped optical lens array 1 of the present embodiment includes first and second optical surfaces 11 and 12, and a plurality of optical lenses 10 are provided on the optical surfaces 10 and 12 and arranged in an equally spaced array. An annular mechanism 102 is provided around each optical lens 10, and the annular mechanism 102 can be an annular groove, and when cutting into a single optical lens 10, as shown in FIG. The groove formed by the annular mechanism 102 can be used to apply an adhesive and is combined with other optical members to form an optical lens module. Alternatively, the annular mechanism 102 may be a convex ring or a concave ring, and the center of the convex ring or the concave ring is located at the optical center axis, and when combined with other optical members, the optical center axis is It can be aligned and used to form a highly precise lens module.

<Example 4>
With reference to FIG. 12, the present embodiment is a disk-shaped optical lens array 1 in a radial array, and a plurality of optical lenses 10 are radiated from the center of the disk-shaped optical lens array 1 toward the peripheral edge of the circle. Arranged in an array. The disk-shaped optical lens array 1 of the present embodiment can use an optical lens array of a whole piece, and is particularly used for aligning the position of each die of a wafer disc. 1 and the wafer disk can be combined, and the position of each die can correspond to each optical lens 10. An application example of the present embodiment is, for example, a light emitting diode array (LED array), and each LED die is provided on a wafer disk in a radial arrangement, and a plurality of optical disks on the disk-shaped optical lens array 1 of the present embodiment are arranged. The optical lenses 10 are also arranged in a radial pattern. After the wafer disk and the disk-shaped optical lens array 1 are combined, the optical lenses 10 and the LED dies can be aligned relative to each other, and the light emitted from the LED dies It can be collected by the lens 10 and shipped to the outside. This assembly method can form a light emitting diode array at a time, and achieves the effect of accurate assembly and cost reduction.

<Example 5>
With reference to FIG. 12, the present embodiment is a disk-shaped optical lens array 1 having a Fresnel optical surface, which is the same as that of the fourth embodiment, and the plurality of optical lenses 10 are arranged around the circle from the center of the disk-shaped optical lens array 1. Arranged in a radial array toward the edge, of which each optical lens 10 is an optical surface of a Fresnel lens. The disk-shaped optical lens array 1 of the present embodiment can use an optical lens array of a single piece. For example, it can be combined with a wafer disc and correspond to the position of each die and each optical lens 10. it can. An application example of this embodiment is, for example, a solar energy system, and each solar energy die is provided on the wafer disk in a radial array, and the wafer disk and the disk-shaped optical lens. After combining the arrays 1, each solar energy die and each optical lens 10 can be correspondingly aligned, and incident solar rays can be collected by each optical lens 10 and irradiated to each solar energy die. This assembly method can form a solar energy device array array at a time, and achieves the effect of accurate assembly and cost reduction.

<Example 6>
Referring to FIGS. 14, 15, and 16, the optical lens 10 in the disk-shaped optical lens array 1 of the present embodiment is laid in a sub-array method, and a plurality of optical lenses 10 constitute one sub-array. The plurality of sub-arrays to be formed are further laid on the disk-shaped optical lens array 1, and as shown in FIG. 14, 4 × 4 optical lenses 10 constitute one square sub-array, and the disk-shaped optical lens Six subarrays are provided on the array 1. As shown in FIGS. 15 and 16, after cutting lines are formed on the disk-shaped optical lens array 1, they are separated along the cutting lines to form a single optical lens sub-array 111. As shown in FIG. The square optical lens sub-array 111 can be cut and formed. Alternatively, as shown in FIG. 16, it can be cut into six circular optical lens sub-arrays 112. Each optical lens array 111/112 includes 4 × 4 optical lenses 10 and can be used in an optical system.

  The manufacturing method and its steps of this example are the same as those of Example 1 (see FIG. 23). The main difference is that 96 aspherical optical surfaces are formed on the upper and lower molds 511, 512 of the plastic injection compression mold 51. Are provided, and 96 optical lenses 10 are formed correspondingly, 16 being one set and a 4 × 4 array arrangement.

<Example 7>
Referring to FIGS. 17, 18, and 19, the optical lens 10 in the disk-shaped optical lens array 1 of the present embodiment is arranged as in the sixth embodiment by a sub-array method, and a localization mechanism is provided on each sub-array. Have As shown in FIG. 17, the disk-shaped optical lens array 1 of the present embodiment includes six rectangular sub-arrays 111 and is configured by 4 × 4 optical lenses 10. Among them, each optical lens sub-array 111 further includes a localization mechanism 15 (16), and a localization mechanism 15 in the form of a collimator lens is provided on each optical sub-array 111 as shown in FIG. At the time of assembly, the localization mechanism 15 can be used, and an optical calibration means is used to align the optical center to form a highly precise optical system. Alternatively, as shown in FIG. 19, four localization mechanisms 16 are provided on each optical lens sub-array 111, and the localization mechanism 16 is composed of a V-shaped localization pin and a V-shaped groove, and the localization mechanism 16 is assembled during assembly. 16, the optical lens sub-array 111 can be localized and combined with other optical members.

  The plastic injection compression mold 51 of the disk-shaped optical lens array 1 can be formed by adopting a modularized structure as shown in FIG. 22, and the plastic injection compression mold 51 includes upper and lower molds 511 and 512. including. The upper mold 511 is provided with six upper mold cores 513, and each upper mold core 513 includes an upper molding surface 5131 that forms an optical surface of the optical lens sub-array 111 and a localization mechanism. Upper molding alignment surface 5132 is provided which can form 15 (or other orientation mechanism 16). The lower mold 512 includes six lower mold cores 514 (lower mold cores), and the lower mold mold surface 5141 and the localization mechanism 15 (or other localization mechanism) capable of forming the optical surface of the optical lens subarray 111 on each lower mold 514. 16) is provided with a lower die orientation mechanism forming die surface 5142. In addition, the lower molds 513 and 514 are designed to have a replaceable structure, and the upper and lower mold cores 513 and 514 can be exchanged for different optical surfaces or positioning mechanisms. Form.

  In the present invention, the preferred embodiments have been disclosed as described above, but these are not intended to limit the present invention in any way, and anyone who is familiar with the technology can make an equivalent scope without departing from the spirit and scope of the present invention. Of course, various fluctuations and hydration colors can be added.

1, 2 Disc-shaped optical lens array 10, 20 Optical lens element
11 First optical surface 12 Second optical surface 13 Disc hole 14 Cutting lines 15, 16, 17, 18 Localization mechanism 100 Deposition disc-shaped optical lens array 101 Optical central axis 102 Concave ring 103 Fresnel optical surface 111, 112 Optical lens sub-array 161 Stereotaxic pins 162, 262 Stereotaxic holes 3 Optical element array
30 Image acquisition member 361 Orientation pin 51 Injection compression mold 511 Upper mold 513 Upper mold core 513 Upper mold mold surface 5132 Upper mold localization mechanism molding mold surface 512 Lower mold 514 Lower mold core 5141 Lower mold molding surface 5142 Lower mold localization mechanism Mold surface 521 Raw material supply port 522 Raw material supply machine 61 Disc-shaped optical lens array primary product 614 Down sprue stick

Claims (14)

  It is formed by injection molding of a plastic material from the center of the disk using a plastic injection compression molding method, is a circular disk shape, has a disk hole in the center, and includes a first optical surface and a second optical surface, A plurality of optical action areas and non-optical action areas other than the optical action areas respectively corresponding thereto are provided, and the plurality of optical action areas form a plurality of optical lenses, of which the plurality of optical lenses are Disc-shaped optical lens array arranged in an array.   2. The disk-shaped optical lens array according to claim 1, wherein the plurality of optical lenses include one or a combination of a biconcave lens, a biconvex lens, a new moon lens, an M lens, and a Fresnel lens.   The array arrangement of the plurality of optical lenses includes any one of an equally spaced array, a radial array, a subarray array, or a combination thereof, and the subarray array forms one subarray from the plurality of optical arrays. The disk-shaped optical lens array according to claim 1, wherein the plurality of sub-arrays are further arranged on the disk-shaped optical lens array.   2. The disk-shaped optical lens array according to claim 1, wherein a shape of the disk hole is any one of a circular shape, a rectangular shape, and a polygonal shape.   2. The disk shape according to claim 1, wherein an annular mechanism is installed around the optical lens, and the annular mechanism is one or a combination of an annular structure formed by a concave groove and an annular structure formed by a stereotactic pin. Optical lens array.   The disk-shaped optical lens array according to claim 1, wherein the non-optical working region further includes at least one localization mechanism, and the disk-shaped optical lens array is precisely aligned with the optical central axis of the optical lens, deposited, and combined. .   The disk-shaped optical lens array according to claim 6, wherein the localization mechanism is any one or a combination of a localization pin, a concave groove, a collimator lens, a through hole, and a cruciform line.   A disk-shaped optical lens array according to any one of claims 1 to 7 is used to cut and separate a single optical lens sub-array along a cutting line, and the optical lens sub-array includes a plurality of optical lenses. An optical lens subarray comprising and arranged in an array manner.   A positioning mechanism is further included in a non-optical action region other than the plurality of optical lenses, and the positioning mechanism is any one or a combination of a positioning pin, a concave groove, a collimator lens, a through hole, and a cross-shaped line. 9. The optical lens subarray according to 8.   An optical lens that uses the disk-shaped optical lens array according to any one of claims 1 to 7 to be cut and separated into a single optical lens along a cutting line.   The optical lens according to claim 10, wherein an annular mechanism is provided around the optical lens, and the annular mechanism is one or a combination of an annular structure formed by a concave groove and an annular structure formed by a stereotactic pin. Formed by plastic injection compression molding method, the following steps:
S0: An upper mold and a lower mold are included, an optical surface molding die surface is provided thereon, a raw material supply port is provided at one center of the upper mold or the lower mold, and a plastic injection compression molding mold is provided,
S1: When the upper and lower molds are slightly opened, a part of the plastic material is injected and injected from the raw material supply port into the cavity formed by the upper and lower molds, and the upper and lower molds are pressurized so as to close and clamp the mold. Complete the cavity filling by refilling the material and applying pressure and compression molding,
S2: After cooling, the upper and lower molds are separated to form a disc-shaped optical lens array primary product,
S3: taking out the primary product including the disk-shaped optical lens array and the down sprue stick;
S4: The down sprue stick is cut to form a disk-shaped optical lens array, and a disk hole is formed in the central portion thereof.
Of a disk-shaped optical lens array containing Utilizing the method of manufacturing a disk optical lens array according to claim 12, and further comprising the following steps:
S5: A cutting line is set on the disk-shaped optical lens array, the disk-shaped optical lens array is cut along the cutting line, and separated into a single optical lens.
Of optical lenses including Utilizing the method of manufacturing a disk optical lens array according to claim 12, and further comprising the following steps:
S5 ′: A disc-shaped optical lens array cutting line is set, the disc-shaped optical lens array is cut along the cutting line, and separated into optical lens sub-arrays.
Of optical lenses including

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